First things first, I did NOT buy my mac mini for gaming. I have a windows 7 tower for that, with a decently fast GPU, although I'm trying to wean myself from it as much as possible since it requires physically moving a bunch of cables to hook back up. Really I just needed a Portal 2 fix, since a lot of custom maps are coming out for it. Since I already own the Windows version, I could install the Mac version for free from Steam. Nothing to lose, so why not try it? Based on all I've read on the net I was expecting gaming to be a disaster, but Portal 2 actually ran surprisingly well. Even at 1920x1200 (my monitor's native resolution) it was smooth, with all other video settings at default. Only two caveats: 1) It runs much smoother with vsync off, albeit with some tearing. Since Portal isn't fast paced it's not bothersome 2) Shader detail is set to low, but aside from the gun not being shiny, it doesn't make a difference in gameplay Likewise, I'd expect any other game based on the older Half Life 2 engine to run just as well. Having the faster CPU probably makes up for a lot. It's good enough that I'm not inclined to go through the hassle of hooking my windows box back up just for Portal 2. Maybe I'll even try Half Life episodes 1+2 since they're on sale now. BTW the fan does definitely kick in, turning the mini into a white noise generator, but my windows tower (with 4 case fans, CPU fan, GPU fan, and PSU fan) was far noisier. So the moral of the story is an HD3000 should be fine for many older games. I have a kid now so my hardcore gaming days are over-- until she's old enough to play too!